⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Begonia johnstonii in version 1.1 of The Plant List.
This name is a synonym of Begonia fusca .
The record derives from Tropicos which reports it as a synonym (record 3400853
) with original publication details: Cat. Plant. Guatemala 12 12 1938.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:30674-2
.